CN208892685U - A kind of drive mechanism - Google Patents

Abstract

The utility model discloses a kind of drive mechanisms, including linkage part, along first direction and the second direction for intersecting at first direction, the movable setting between the first position and the second position relative to pedestal；Linkage part has the first auxiliary section, and the first auxiliary section and the second auxiliary section of the Passive part driven by linkage part are cooperated by inclined first guide surface；Linkage part is threaded through in Passive part, in first position, the third place of Passive part in this second direction；In the second position, the 4th position of Passive part in a second direction.When the horizontal movement of linkage part, under the mating reaction of inclined guide surface, movement tendency is generated in a second direction to Passive part, and then Passive part can be driven to move in a second direction, since linkage part is threaded through on Passive part, so that the product height in a second direction with the drive mechanism not will increase, product compact-sized and take up space small.

Description

A kind of drive mechanism

Technical field

The utility model belongs to mechanically operated technical field, and in particular to a kind of drive mechanism.

Background technique

In mechanical transmission fields, to drive different components in both directions, two different driving dresses are generallyd use It sets to realize, driving device is usually the biggish devices such as motor, cylinder elevating lever.

In machine driving, for such as stapler pistol etc., internal cavity is in the device of elongate cavity, by using biography Dynamic structure drives Passive part to move up and down in short transverse, such as drive mechanism is the structures such as cylinder, lifting motor, such Although the drive mechanism of type can be realized moves up and down in vertical direction driving Passive part, but needs the inner cavity of product vertical There is sufficiently high space on direction, is otherwise difficult to drive Passive part in vertical side using drive mechanisms such as cylinder, lifting motors It moves up and down upwards.

For example, operation used in stapler, the size of stapler in the height direction is limited, have in the longitudinal direction compared with Long installation space such as uses vertically arranged cylinder or lifting motor, it is difficult to be mounted on the cylinder or lifting motor identical In the inner cavity of device, just it is difficult to drive the moving component in stapler to move in vertical direction.For this purpose, be badly in need of design it is a kind of will be horizontal The conversion of motion in direction is the movement of vertical direction, so that drive mechanism is compact-sized in the short transverse of product, it will not mistake Mostly increase the height of product.

Utility model content

Therefore, the technical problem to be solved by the utility model is to overcome in the prior art drive mechanism be difficult to do not increasing Add and drives the component in product in the defect vertically moved up and down while product height.

For this purpose, the utility model provides a kind of drive mechanism, comprising:

Linkage part, along first direction and the second direction for intersecting at the first direction, in the relative to pedestal Movable setting between one position and the second position；

The linkage part has the first auxiliary section, the first auxiliary section and the of the Passive part driven by the linkage part Two auxiliary sections are cooperated by inclined first guide surface；

The linkage part is threaded through in the Passive part, and in the first position, the Passive part is in the second party Upward the third place；In the second position, the 4th position of the Passive part in this second direction.

Preferably, above-mentioned drive mechanism, the first actuator, relative to the pedestal initial position and active position Between be slidably arranged；When first actuator is moved towards the initial position, first actuator is to described Dynamic component applies the driving force towards the second position；

Resetting-mechanism is arranged, on the first direction and the second direction with the distal linkage of the linkage part Apply the first reset force and the second reset force towards the first position to the linkage part respectively.

It is further preferred that above-mentioned drive mechanism, in the first position, the distal end of the linkage part is overlapped on institute On the proximal end for stating the first actuator；In the active position, the end face of the linkage part distal end and first actuator The end face of proximal end is detached from.

It is further preferred that above-mentioned drive mechanism, the inner wall of the Passive part is equipped with prominent along the second direction Protruding portion out；

The proximal end of the linkage part is equipped with recessed portion, lug boss and the first guide surface positioned at the recessed portion distal end, It is connected between the recessed portion and the lug boss by the first guide surface transition；

In the first position, the protruding portion is abutted with the recessed portion, in the second position, the protruding portion with The lug boss abuts.

It is further preferred that above-mentioned drive mechanism, the inner wall of the Passive part is equipped with prominent along the second direction Protruding portion out；

The linkage part extends proximally into the Passive part；

The proximal end of the linkage part is equipped with towards the first guide surface of the protruding portion and positioned at first guide surface The lug boss of distal end；

In the first position, first guide surface is far from the protruding portion；In the second position, the lug boss It is connected on the protruding portion.

It further include that proximal end is fixed on the pedestal and towards described first it is further preferred that above-mentioned drive mechanism The locating part that actuator direction extends；The proximal end of the linkage part is slidably disposed on the locating part, the limit Part is used to limit the motion range of the linkage part.

It is further preferred that above-mentioned drive mechanism, the proximal end of the linkage part offers first sliding groove, described in formation Offer second sliding slot in at least one side wall of first sliding groove, the opening direction of the first sliding groove and the second sliding slot is opposite And extend along the first direction；

The locating part distal end is provided with the limiting section that can be moved in the second sliding slot；

In the second position, the limiting section gear the second sliding slot distal end opening, in the first position, The limiting section support leans against the slot bottom of the second sliding slot proximal end.

It is further preferred that above-mentioned drive mechanism, the resetting-mechanism include

Shifting part, along the first direction, relative between the 5th position of the pedestal and the 6th position slidably Setting；

Stressed member is arranged in the outside wall surface of the linkage part, an end wall of the stressed member towards the shifting part The second inclined guide surface of face.

It is further preferred that above-mentioned drive mechanism, further include relative to pedestal the 5th position with described 6th The moving component being slidably arranged between setting, the shifting part are arranged on the moving component.

It is further preferred that above-mentioned drive mechanism, the resetting-mechanism further include be arranged on the pedestal and against Return unit on the linkage part, along first direction, the return unit applies to the linkage part towards described first First biasing force of position.

Technical solution provided by the utility model, has the advantages that

Drive mechanism provided by the utility model, linkage part is along first direction and the second direction for intersecting at first direction On, the movable setting between the first position and the second position relative to pedestal；Linkage part have the first auxiliary section, first Auxiliary section and the second auxiliary section of the Passive part driven by linkage part are cooperated by inclined first guide surface.This transmission knot Structure, the first auxiliary section are cooperated with the second auxiliary section by inclined guide surface, when linkage part moves to second from first position When position, since the first guide surface has difference in height in a second direction, so that Passive part realizes lifting fortune in a second direction It is dynamic, to realize that by the conversion of motion of first direction be the movement in second direction；Since linkage part is threaded through on Passive part, So that the product height in a second direction with the drive mechanism not will increase, product compact-sized and taken up space It is small.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the stereoscopic schematic diagram of the drive mechanism provided in the present embodiment 1；

Fig. 2 is the longitudinal profile schematic diagram of drive mechanism in Fig. 1；

Fig. 3 is the schematic diagram of the section structure of linkage part provided in embodiment 1, Passive part and locating part；

Fig. 4 is the structural schematic diagram of linkage part provided in embodiment 1；

Fig. 5 is the structural schematic diagram of locating part provided in embodiment 1；

Fig. 6 is the structural schematic diagram of the drive mechanism provided in embodiment 2；

Fig. 7 is the amplification partial cutaway schematic of drive mechanism provided in embodiment 2；

Fig. 8 is the structural schematic diagram of linkage part provided in embodiment 2；

Description of symbols:

1- linkage part；The first guide surface of 11-；12- recessed portion；13- lug boss；14- first sliding groove；15- second is sliding Slot；

2- Passive part；21- protruding portion；

The first actuator of 3-；

41- shifting part；42- stressed member；The second guide surface of 421-；The first return unit of 43-；

5- locating part；51- limiting section；

6- moving component；

The second return unit of 7-.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.

Embodiment 1

The present embodiment provides a kind of drive mechanisms, as shown in Figures 1 to 5, comprising: linkage part 1, the first actuator 3, fortune Dynamic component and resetting-mechanism.

Wherein, in linkage part 1 relative to movable setting between the first position and the second position on pedestal, linkage Component 1 has movement in the radial and axial of moving component 6；One end of first actuator 3 and linkage part 1, which is linked, to be arranged, and Slidably it is arranged relative to the initial position on pedestal and between active position.It is moved in the first actuator towards initial position When, the first actuator 3 applies the driving force towards the second position to linkage part 1；Linkage part 1 is threaded through on Passive part 2, connection There is the first auxiliary section, the first auxiliary section and second on the Passive part 2 driven by linkage part 1 in the outside wall surface of dynamic component 1 Auxiliary section is cooperated by inclined first guide surface 11.

To be named as in the axial direction of moving component 6 by near operation one end convenient for the positional relationship of statement all parts Proximal end, one end far from operator are named as distal end (as shown in Figure 1)；It is first direction along pedestal axially direction, with first The vertical direction in direction (i.e. the radial direction of pedestal) is second direction.

As depicted in figs. 1 and 2, when linkage part 1 is in first position, general radially of the Passive part 2 in moving component In the third place, the distal end of linkage part 1 is overlapped on the proximal end of the first actuator 3 at this time, and proximal slide is arranged in pedestal On；When linkage part 1 is in the second position, the end face of the end face of the distal end of linkage part 1 and the proximal end of the first actuator 3 at this time It abuts each other, the first actuator 3 driving linkage part 1 does proximally facing retraction movement, and linkage part 1 drives 2 court of Passive part It is moved to the 4th position, so that Passive part 2 is radially in the 4th position in moving component.

Below by taking stapler as an example, linkage part 1 is described in detail in the present embodiment in drive mechanism in moving component axis To with radially, the second position is moved to by first position, and resets to driving of the motion process of first position to Passive part 2 Process.

Specifically, as shown in Figure 1 to Figure 3, above-mentioned linkage part 1 is linkage block, Passive part 2 is closing piece, and first drives Moving part 3 is ejector pin bar, and linkage block is threaded through in closing piece, and the distal end of linkage part 1 is slidably arranged on the first actuator 3, linkage The proximal end of component 1 is the first auxiliary section and protrudes into Passive part 2；The inner wall of Passive part 2 is prominent equipped with direction is slid along Protruding portion 21 be the second auxiliary section；The end of the proximal end of linkage part 1 is equipped with the first guide surface 11 towards protruding portion 21, makes It obtains and forms the first guide surface 11 at the first guide surface 11；In first position, the first guide surface 11 is far from protruding portion 21；Second Position is located at ipsilateral outside wall surface with the first guide surface 11 on linkage part 1 and is connected on protruding portion 21.Due in moving component 6 radially, and the first guide surface 11 is provided on the proximal end of linkage part 1, does retraction movement when linkage part 1 is proximally facing When, the first guide surface 11 on linkage part 1 is gradually contacted with protruding portion 21, applies protruding portion 21 towards the 4th position Power is compressed, so that Passive part 2 is moved towards the 4th locality, it is ipsilateral when being located on linkage part 1 with the first guide surface 11 Other outside wall surfaces are connected on protruding portion 21, and Passive part 2 is located at the 4th position, realize Passive part 2 in vertical elevating movement.

As shown in Figures 1 to 5, drive mechanism further includes locating part 5, and the proximal end of locating part 5 is fixed on pedestal, distally wears It crosses after Passive part 2 and extends towards distal direction；The proximal end that linkage part 1 protrudes into Passive part 2 is slidably disposed on limit On part 5, locating part 5 is used to limit the motion range of linkage part 1.

As shown in figure 4, offering first sliding groove 14 on the end for the proximal end that linkage part 1 protrudes into Passive part 2；Form the Offer second sliding slot 15 on the two sides side wall of one sliding slot 14, the opening direction of first sliding groove 14 and second sliding slot 15 is on the contrary simultaneously Along the axially extending of moving component；Limiting section 51 is provided on the end of the distal end of locating part 5, the distal end of locating part 5 protrudes into In one sliding slot 14, limiting section 51 is embedded in second sliding slot 15；In the second position, limiting section 51 is kept off in the distal end of second sliding slot 15 Opening, in first position, limiting section 51 is resisted against the slot bottom of 15 proximal end of second sliding slot.

For example, in the present embodiment, limiting section 51 is the pin shaft being threaded through on 5 distal end of locating part, the both ends of pin shaft are protruded into In two second sliding slots 15.

As depicted in figs. 1 and 2, resetting-mechanism includes shifting part 41, stressed member 42, moving component 6 and the second return unit 7. Wherein, moving component 6 is slidably arranged along it axially with respect between the 5th position of pedestal and the 6th position.For example, movement Component 6 is screw rod, and shifting part 41 is the pin shaft being threaded through on screw rod.In the present embodiment, the 5th above-mentioned position corresponds to connection The second position of dynamic component 1, the 6th above-mentioned position correspond to the first position of linkage part 1.

Stressed member 42 is arranged in the outside wall surface of linkage part 1, between shifting part 41 and the first actuator 3, stress The end face of 42 proximal end of part is in by shifting part 41 towards inclined second guide surface 421 of the first actuator 3；Shifting part 41 towards the 6th When position is slided, 41 face of shifting part simultaneously compresses the second guide surface 421, applies the first reset force and second to stressed member 42 and resets Power.

For example, stressed member 42 is the curved portion for being molded over the outside wall surface two sides of linkage part 1, two curved portions are formed for fortune The guiding area that dynamic component 6 passes through.In the present embodiment, guiding area can be transported in guiding area along its axial reciprocating for screw rod It is dynamic that guiding role is provided.

For example, the second return unit 7 is the compressed spring perhaps elastomeric element with flexible deformation such as elastic slice or torsional spring, Wherein, the second return unit 7 is arranged on pedestal and is resisted against on linkage part 1, along the radial direction of moving component, the second return unit 7 Apply the second biasing force towards the second position to linkage part 1.

The setting of second return unit 7, it is ensured that at the second position, radially along moving component, the distal end of linkage part 1 It separates, and is overlapped on moving component 6 from the first actuator 3, so that needed for linkage part 1 has in the radial direction of moving component Elastic deformation amount, the end face of the distal end of linkage part 1 and the proximal face of the first actuator 3 lean；When the first actuator 3 When proximally facing direction moves, to realize the whole proximally facing direction sliding of driving linkage part 1.

For example, as shown in Figure 1, be provided with limited post in the outside wall surface of linkage part 1, be provided on limited post from distal end to The distal end of the sloping portion of upward inclination proximal, the second return unit 7 is set on the sloping portion, and proximal end is fixed on pedestal. Such as the pedestal in the present embodiment is shell, the proximal end of the second return unit 7 is fixed on the inner wall of shell.

The engagement process between linkage part 1, resetting-mechanism and the first actuator 3 in the present embodiment are as follows:

In initial state, linkage part 1 and Passive part 2 are respectively at first position and the third place, linkage part 1 it is remote End is overlapped on the proximal end of the first moving component 6, and linkage part 1 extends proximally into Passive part 2 but far from protruding portion 21, limit Limiting section 51 on part 5 is located at the slot bottom of second sliding slot 15.

The driving process of linkage part 1 are as follows: the first actuator 3 first to stretch out motion is distally done, is moved in the first actuator 3 When to active position so that the proximal face of the first actuator 3 and the distal end emaciated face of linkage part 1 from and face, at this point, The distance between the proximal face of first actuator 3 and the end face of distal end of linkage part 1 are less than initial position and active position The distance between；It is transported when the first actuator 3, which is re-directed towards proximal end, does retraction movement, namely from active position towards initial position Dynamic, the proximal face of the first actuator 3 will be resisted against on the distal end end face of linkage part 1, and the first actuator 3 will push linkage portion The proximally facing sliding of part 1, so that the slot bottom of second sliding slot 15 is gradually distance from limiting section 51, the first guide surface 11 of linkage part 1 It being gradually resisted against on protruding portion 21, the first guide surface 11, which applies towards the 4th locality protruding portion 21, compresses power, so that Passive part 2 is moved towards the 4th locality；With the continuous retraction movement of linkage part 1, it is oriented on linkage part 1 with first Face 11 is located at other ipsilateral outside wall surfaces when being connected on protruding portion 21, and Passive part 2 moves to the 4th position, and linkage part 1 is transported It moves to the second position.

The reseting procedure of linkage part 1 are as follows: moving component 6 is positioned against the 6th position from the 5th and moves, that is, movement portion The proximally distal movement of part 6, the both ends of the shifting part 41 on moving component 6 face and are resisted against one of stressed member 42 respectively On second guide surface 421, since the second guide surface 421 is in the surface that tilts upward by proximate, shifting part 41 is to second The application of guide surface 421 compresses power, this, which compresses power, can drive linkage part 1 to be not only axially toward first position sliding, moreover it is possible to It is enough to be lifted upwards in the distal end for radially making linkage part 1 of moving component, as linkage part 1 is towards first position direction Movement, the slot bottom of second sliding slot 15 move closer to limiting section 51；Since second sliding slot 15 and limiting section 51 are in the diameter of moving component Upward limited separation, in linkage part 1 into first position direction sliding process, shifting part 41 compress power under, linkage Component 1 is rotating fulcrum with limiting section 51, and the distal end of linkage part 1 is lifted upwards, and proximal end moves downward, so that linkage part 1 First position is reset to respectively with Passive part 2, so that the reciprocating motion of linkage part 1 and Passive part 2 is realized, due to linkage part 1 is unanimously threaded through on Passive part 2, which is realizing the lifting fortune for the radial direction that axial conversion of motion is moving component While dynamic, not will increase product in the height dimension radially of moving component so that the more compact structure of product and Occupied space is smaller.

As shown in figure 4, linkage part 1 includes the first part connecting with pedestal, second connect with the first actuator 3 Part, and the arc-shaped transition part that first part is connected with second part；Along the radial direction of moving component, first part is located at The radial top of moving component.Above-mentioned transition portion can increase linkage part 1 in the deformation radially of moving component Amount, the end face convenient for the end face and 3 proximal end of the first actuator of 1 distal end of linkage part lean, while in order to increase linkage part 1 Deflection, linkage part 1 can be made of elastic material.

In addition, above-mentioned drive mechanism is applied in stapler, it can be by the stretching motion of ejector pin bar itself, to drive Dynamic linkage part 1 moves, so that the more compact structure of entire stapler.

Embodiment 2

The present embodiment provides a kind of drive mechanisms, compared with the drive mechanism provided in embodiment 1, existing difference Be in:

Passive part 2 is different from the fit system of linkage part 1, specific as shown in Figure 6 to 8, on the inner wall of Passive part 2 Equipped with sliding along direction protruding portion 21 outstanding；Linkage part 1 offers recess in the outside wall surface opposite with protruding portion 21 Recessed portion 12, correspondingly, recessed portion 12 close to the first actuator 3 side formed lug boss 13, recessed portion 12 and protrusion It is connected between portion 13 by 11 transition of the first guide surface.In first position, protruding portion 21 is abutted with recessed portion 12, in second It sets, protruding portion 21 is abutted with lug boss 13, and recessed portion 12 and lug boss 13 constitute the first auxiliary section, and protruding portion 21 constitutes second and matches Conjunction portion.For example, in the present embodiment, Passive part 2 is sliding sleeve；Protruding portion 21 is hemispherical, and the first guide surface 11 is tangential on hemisphere The spherical surface of shape.

Linkage part 1 and the driving process of Passive part 2 are similar to Example 1, but the initial state of linkage part 1 is different, Initial state in the present embodiment, the recessed portion 12 on linkage part 1 are abutted with protruding portion 21；During driving, work as linkage Component 1 is proximally facing when gradually doing retraction movement, the position cooperated on linkage part 1 with protruding portion 21 gradually by recessed portion 12 to First guide surface 11, the first guide surface 11 of linkage part 1, which applies towards the 4th position protruding portion 21, compresses power, Passive part 2 move towards the 4th locality；The cooperation position of linkage part 1 and protruding portion 21 gradually arrives lug boss 13, so that passively Part 2 reaches the 4th position, and linkage part 1 reaches the second position；In 1 reseting procedure of linkage part, the second of linkage part 1 is led It is whole radially to have sliding point in axial direction and moving component towards first position to face 421 under the driving of shifting part 41 Amount, the distal end of linkage part 1 can also be struck part 41 drive, realize reseting procedure.

As shown in Figure 6 and Figure 7, above-mentioned resetting-mechanism further includes the first return unit 43.For example, the first return unit 43 is compression Spring perhaps elastic slice or torsional spring etc. have flexible deformation elastomeric element, wherein the first return unit 43 be arranged on pedestal And it is resisted against on linkage part 1；Along axially, the first return unit 43 applies the first bias towards first position to linkage part 1 Power.Under the action of the first biasing force, the linkage part 1 in the second position has the function of moving towards first position Gesture.

It is not used in stapler as embodiment 1 or the interchangeable embodiment of embodiment 2, above-mentioned drive mechanism When, the first actuator 3 can be cylinder or telescoping mechanism.Accordingly, proximally facing retraction fortune is done in driving linkage part 1 When dynamic, under initial state, so that it may allow the telescopic shaft of cylinder to be resisted against on the end face of the distal end of linkage part 1, and then to drive Linkage part 1 does proximally facing retraction movement.

Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among the protection scope created still in the utility model.

Claims (10)

1. a kind of drive mechanism, which is characterized in that including

Linkage part (1), along first direction and the second direction for intersecting at the first direction, in first relative to pedestal Movable setting between position and the second position；

The linkage part (1) has the first auxiliary section, the first auxiliary section and the Passive part driven by the linkage part (1) (2) the second auxiliary section is cooperated by inclined first guide surface (11)；

The linkage part (1) is threaded through in the Passive part (2), and in the first position, the Passive part (2) is described the The third place on two directions；In the second position, the 4th position of the Passive part (2) in this second direction.

2. drive mechanism according to claim 1, which is characterized in that further include

First actuator (3), is slidably arranged between the initial position and active position relative to the pedestal；Described When one actuator is moved towards the initial position, first actuator (3) applies described in the linkage part (1) The driving force of the second position；

Resetting-mechanism is arranged with the distal linkage of the linkage part (1), divides on the first direction and the second direction Other the first reset force and the second reset force linkage part (1) applied towards the first position.

3. drive mechanism according to claim 2, which is characterized in that in the first position, the linkage part (1) Distal end is overlapped on the proximal end of first actuator (3)；In the active position, the end face of linkage part (1) distal end It is detached from the end face of the first actuator (3) proximal end.

4. drive mechanism according to claim 3, which is characterized in that the inner wall of the Passive part (2) is equipped with along institute State second direction protruding portion outstanding (21)；

The proximal end of the linkage part (1) be equipped with recessed portion (12), be located at the recessed portion (12) distal end lug boss (13) and First guide surface (11) passes through the first guide surface (11) mistake between the recessed portion (12) and the lug boss (13) Cross connection；

In the first position, the protruding portion (21) abuts with the recessed portion (12), in the second position, the protrusion Portion (21) is abutted with the lug boss (13).

5. drive mechanism according to claim 3, which is characterized in that the inner wall of the Passive part (2) is equipped with along institute State second direction protruding portion outstanding (21)；

The linkage part (1) extends proximally into the Passive part (2)；

The proximal end of the linkage part (1) is equipped with towards the first guide surface (11) of the protruding portion (21) and positioned at described first The lug boss (13) of guide surface (11) distal end；

In the first position, first guide surface (11) is far from the protruding portion (21)；It is described convex in the second position Portion (13) are played to be connected on the protruding portion (21).

6. drive mechanism according to claim 5, which is characterized in that further include that proximal end is fixed on the pedestal simultaneously direction The locating part (5) that first actuator (3) direction extends；The proximal end of the linkage part (1) is slidably disposed on described On locating part (5), the locating part (5) is used to limit the motion range of the linkage part (1).

7. drive mechanism according to claim 6, which is characterized in that the proximal end of the linkage part (1) offers first Sliding slot (14) forms in at least one side wall of the first sliding groove (14) and offers second sliding slot (15), the first sliding groove (14) extend on the contrary and along the first direction with the opening direction of the second sliding slot (15)；

The locating part (5) is distally provided with the limiting section (51) that can be moved in the second sliding slot (15)；

In the second position, the limiting section (51) keeps off the opening in the second sliding slot (15) distal end, described first Position, the limiting section (51) are resisted against the slot bottom of the second sliding slot (15) proximal end.

8. drive mechanism according to claim 4 or 5, which is characterized in that the resetting-mechanism includes

Shifting part (41), along the first direction, relative between the 5th position of the pedestal and the 6th position slidably Setting；

Stressed member (42), is arranged in the outside wall surface of the linkage part (1), and the stressed member (42) is towards the shifting part (41) inclined the second guide surface (421) of a end wall surface.

9. drive mechanism according to claim 8, which is characterized in that further include relative to the 5th position of pedestal and institute The moving component (6) being slidably arranged between the 6th position is stated, the shifting part (41) is arranged on the moving component (6).

10. drive mechanism according to claim 8, which is characterized in that the resetting-mechanism further includes being arranged in the base On frame and the return unit that is resisted against on the linkage part (1), along first direction, the return unit gives the linkage part (1) Apply the first biasing force towards the first position.